Ari Seidenstein, MD

Hip and Knee Orthopedic Surgery

(201) 639-6620

doctors.hackensackmeridianhealth.org

4.7 out of 5

362 verified ratings

362 Ratings, 69 Comments


The following ratings and reviews are based on verified feedback collected from independently administered patient experience surveys. The ratings and comments submitted by patients reflect their own views and opinions. Patient identities are withheld to ensure confidentiality and privacy.
May 22, 2026
My provider is great he’s “Second to none other” He’s very professional and has great bedside manners.

May 12, 2026
He made you feel at ease since it was the first time I met him

Apr 28, 2026
Very helpful

Apr 23, 2026
The receptionist were very personable and easy to talk to.

Apr 14, 2026
I received Excellent Medical Care with a personal touch, I along with my Family are forever Grateful to Dr. Seidenstein and the Medical Professionals at Hackensack Meridian!

Apr 3, 2026
The doctor was well informed of my history and gave a plan of treatment right away. The visit was short and efficient.

Mar 20, 2026
Took my pain

Mar 17, 2026
Dr Seidenstein did both a total hip and total knee replacement and I was highly satisfied with both

Feb 26, 2026
excellant care

Feb 9, 2026
Professional and friendly

Feb 6, 2026
A spotless easy access facility, lots of help available in every location. I was able to see the doctor several times, with no wait.I needed a 4-post walker, it was provided. I needed several braces. They were provided. I needed help with learning how to adjust the tools that were provided. They provided them. I needed PT. They gave PT instructions how to and what I needed to learn again to walk, get muscle tone back in both legs. This is still ongoing.

Feb 1, 2026
My outcome was terrific and as explained to me. The surgeon is very talented.

Jan 29, 2026
I've been Dr. Seidensteins patient for several years. After recently undergoing a total left hip replacement, I can finally walk without excruciating pain.

Jan 28, 2026
Spacious facility and clean!

Jan 23, 2026
My hip surgery was completed one year ago and this was a follow-up visit. I had concerns about my other hip which were addressed.

Jan 13, 2026
Great doctor and give the patient enough time for explanation the case 👍

Dec 24, 2025
I would like to say that I've already recommended Dr. Seidenstein to people that I've seen, whether it be in a store or a dentist's office who has problems with their knees or has had surgery that didn't go well, I have recommended Dr. Seidenstein. I told them the kind of person that I felt he was and I wouldn't dare go to anybody else. Dr. Seidenstein has helped me maintain my knees because I don't feel that I would like to have surgery. I would like to continue with the route with injections, their gel injections. I would also like to say that his staff in both the from office, a hack and sack or it's parameters actually, and the Woodcliffe Lake office are phenomenal. I would have to say that he hires

Dec 8, 2025
My overall experience with Dr. Seidenstein and his staff was exceptional. I was very happy, very satisfied.

Dec 1, 2025
Excellent doctor.

Nov 26, 2025
Very nive

Nov 26, 2025
Immediately after I saw the doctor while I was still in the examination room, I asked the nurse if she could please have the doctor call my allergist because there was some question about whether I would be allergic to the medicine and he had suggested I take it and if I break out in high, then stop. I wasn't comfortable with that, but it took me a beat to realize it. And the nurse refused to leave a message for the doctor or to get the doctor or to ask and just told me to call my allergist myself. That did not sit well with me and I don't think that my allergists would talk to me with the same detail or understanding or alacrity as they would with another doctor. I did speak to my allergists. I straightened it out, but I feel it should have been a doctor-to-doctor conversation. Thank you.

Nov 17, 2025
I was always very well looked after by all the staff.

Nov 7, 2025
Was very satisfied with my visit and will recommend this provider to all!!

Nov 6, 2025
Previous diagnosis was explained by me. The MRI confirmed the diagnosis. The Dr told me MRI reports lie. The doctor's examination wasn't thorough enough to get my hip to make click sound. He discounted my diagnosis to back related issues and pushed me off to schedule a visit with a different dr. It's as if since I am not a hip replacement patient and I am a senior citizen he pushed me aside. Having a hip injection early next week with a different doctor outside of this "practice".

Nov 3, 2025
My experience was great so far. Nothing unusual to report. Great team experience, keep up the good work.

Oct 20, 2025
Exceptional experience

Oct 17, 2025
He wa awesome.

Oct 13, 2025
Doc Ari should be able to determine when a patient has a history of nerve damage, how it would affect the outcome of the operation, and what the patient needs to recover from the initial procedure. However, he had no clue as to what was happening to me until I explained it ot him.

Oct 13, 2025
So far, everything's perfect. I'm about to have surgery, and they've provided me with all the necessary facilities, pre-operative information, and open communication for any questions. Thank you.

Oct 8, 2025
Very good dr explained everything to me and gave me good advise

Oct 6, 2025
I think the provider did a great job, but receiving all these text messages and emails and phone calls about giving a rating on the provider and my whole experience is a little too soon since I still have other times I need to be going for help with this provider. So I can't give an accurate response until I am done with the services. Thank you.

Sep 29, 2025
Great and caring physician

Sep 29, 2025
Already referred my friend to this doctor

Sep 24, 2025
Dr. Seidenstein is caring and professional. My life has taken a qualitative change for the better.

Sep 22, 2025
for the three minutes i saw them they showed a distain for listening to how i was actually injured. their goal was to move me to an mri.

Sep 19, 2025
surprisingly very efficient and pleasant , thank you

Sep 19, 2025
This is my second time seeing This Speacialist Doctor Ari, and I very much appreciate his work,knowledge and dedication to the patients. Thank you

Sep 19, 2025
Provider is very knowledgeable and explained everything in a way that pt and family can fully understand. Provider encouraged pt & family to discuss any questions or concerns. All the staffs are very nice and professional.

Sep 19, 2025
I just wanted to express my gratitude to the aforementioned professional for his quality, his time, and his passion for customer service. Congratulations. Thank you very much.

Sep 15, 2025
I'm always satisfied with my experiences with this office. The front desk people are friendly and kind and very efficient. The doctor is the best.

Sep 8, 2025
Office was packed, but I saw the patients (including myself) treated well and made to feel that their issues mattered. The staff was courteous, empathetic and professional. The Imaging Tech, Doctor, PA and Scribe were attentive and listened to me and made sure we were on the same page. I was in as a 1st time patient for a consult, they made me feel like I was NOT a "throw-away" one-shot deal. I have a different issue (knee) that I will be addressing down the road. I will seek to return in the future. My current healthcare is split between Englewood and HMH and I wish to consolidate under HMH. Finding an Orthopedist I would be comfortable with helped confirm my decision.

Sep 5, 2025
Extremely caring!

Sep 4, 2025
Doctor Seidenstein was very nice. He listened to my concerns. I didn't felt rushed by him at all. He's very professional. Just wanted to say thank you & I really appreciate you.

Sep 4, 2025
Great bedside mannerisms

Aug 27, 2025
Office is immaculate. All employees very pleasant & helpful

Aug 27, 2025
My only regret is not having heard of Dr. Seidenstein sooner.

Aug 25, 2025
I was completely satisfied with my visit. Everyone was kind, helpful and efficient

Aug 25, 2025
Office staff was very friendly and concerned about my needs. Things were explained to me about what needed to be done before and after surgery, and provided paper work with everything I need. I would highly recommend Dr Seidenstein and his staff to my family and friends.

Aug 25, 2025
He's a great doctor, but I think like all surgeons and orthopedic surgeons, they're very orally self-confident and a little, I forget the word, and I think they know they do a good job and they are sometimes just overly confident and relay that, which can be a good thing or it can be negative thing with this doctor. I'm very happy that he feels so confident.

Aug 15, 2025
Dr. Seidenstein and his team are extremely professional and respectful.